CBSE 12th Physics Delhi Set 1 - 2023 | Class 12 Year Wise Previous Years Questions

CBSE 12th Physics Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

Which one of the following electromagnetic radiation has the least wavelength?

Gamma rays

Microwaves

Visible light

X-rays

CBSE 12th Physics Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

In a Young's double-slit experiment, the screen is moved away from the plane of the slits. What will be its effect on the following?

(i) Angular separation of the fringes.

(ii) Fringe-width.

Both (i) and (ii) remain constant.

(i) remains constant, but (ii) decreases.

(i) remains constant, but (ii) increases.

Both (i) and (ii) increase.

CBSE 12th Physics Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

The energy of a photon of wavelength $$\lambda%$ is

$$h c \lambda$$

$$h c / \lambda$$

$$\lambda / h c$$

$$\lambda h / c$$

CBSE 12th Physics Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

The ratio of the nuclear densities of two nuclei having mass numbers 64 and 125 is

$$\frac{64}{125}$$

$$\frac{4}{5}$$

$$\frac{5}{4}$$

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